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Replace a value if null or undefined in JavaScript
...ave a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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Why does `a == b or c or d` always evaluate to True?
...integer as True.
In [11]: if 3:
...: print ("yey")
...:
yey
Now, Python builds on that logic and let you use logic literals such as or on integers, and so
In [9]: False or 3
Out[9]: 3
Finally
In [4]: a==b or c or d
Out[4]: 3
The proper way to write it would be:
In [13]: if a i...
What is the result of % in Python?
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@P.MyerNore I know this is almost 3 years later, but may help others. Read the first highlighted para in sec. 5.6.2 linked above by KurzedMetal. The "x %= {}" is simply a short-form for "x = x % {...}"
– Sujay Phadke
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Expansion of variables inside single quotes in a command in Bash
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@Evert: Don't know how to say it better. I've removed the sentence.
– Jo So
Mar 9 '17 at 15:13
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How do I get the number of days between two dates in JavaScript?
... As the answer that's marked correct and highest voted (as of now), it's worth commenting that this answer doesn't correctly handle Daylight Savings Time. See Michael Liu's answer instead.
– osullic
Sep 21 '16 at 0:01
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How to change value of process.env.PORT in node.js?
...llowing line to the file exactly as so Defaults env_keep +="PORT"
Now when you run sudo node app.js it should work as desired.
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How to articulate the difference between asynchronous and parallel programming?
...ly so it didn't lock up your UI and you could continue doing other things. Now, each frame of that animation can also be considered as an individual task. If we have multiple CPUs/Cores or multiple machines available, we can render multiple frames in parallel to speed up the overall workload.
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How to move all files including hidden files into parent directory via *
... "Just ignore the warning" may not always be a good idea. Right now I'm having a problem with a script in which I need to stop execution if any step fails - since this solution always causes an error, it kills my script. I need a way to determine if the mv command failed or not...
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How does lombok work?
I met lombok today.
I'm very anxious to know how it works.
A Java Geek Article gives some clues but it's not perfectly clear to me:
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Difference between binary semaphore and mutex
.... The other(s) would wait for a subsequent one. Is the order of receiving known or guaranteed? Depends on the OS.
– Benoit
Mar 3 '14 at 16:01
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